EP 2100157 A2 20090916 - CONTRAST ENHANCED MRA WITH HIGHLY CONSTRAINED BACKPROJECTION RECONSTRUCTION USING PHASE CONTRAST COMPOSITE IMAGE
Title (en)
CONTRAST ENHANCED MRA WITH HIGHLY CONSTRAINED BACKPROJECTION RECONSTRUCTION USING PHASE CONTRAST COMPOSITE IMAGE
Title (de)
KONTRASTVERSTÄRKTE MRA MIT STARK EINGESCHRÄNKTER RÜCKPROJEKTIONS-REKONSTRUKTION UNTER VERWENDUNG EINES PHASENKONTRAST-VERBUNDBILDES
Title (fr)
ARM À CONTRASTE ACCENTUÉ AVEC RECONSTRUCTION DE RÉTROPROJECTION HAUTEMENT CONTRAINTE UTILISANT UNE IMAGE COMPOSITE À CONTRASTE DE PHASE
Publication
Application
Priority
- US 2007089063 W 20071228
- US 88309907 P 20070102
Abstract (en)
[origin: WO2008118238A2] Mask projection views are obtained prior to the arrival of a contrast agent during a dynamic contrast enhanced MRA study. After the arrival of the contrast agent, a set of undersampled contrast enhanced projection views are obtained for each of a plurality of time frames. Corresponding mask projection views are subtracted from the contrast enhanced projection views to provide sparse contrast enhanced projection view sets. A phase contrast scan of a region of interest is performed prior to or after the arrival of the contrast agent. The phase contrast image is used as a composite image in a HYPR reconstruction of the sparse projection view sets to produce first pass contrast enhanced images. Iterative HYPR reconstructions can also be performed to remove venous information from the reconstructed images.
IPC 8 full level
G01R 33/28 (2006.01); G01R 33/561 (2006.01); G01R 33/563 (2006.01); G01R 33/565 (2006.01)
CPC (source: EP US)
G01R 33/4824 (2013.01 - EP US); G01R 33/5601 (2013.01 - EP US); G01R 33/561 (2013.01 - EP US); G01R 33/56308 (2013.01 - EP US); G01R 33/56316 (2013.01 - EP US); G01R 33/5635 (2013.01 - EP US); G01R 33/56509 (2013.01 - EP US)
Citation (search report)
See references of WO 2008118238A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008118238 A2 20081002; WO 2008118238 A3 20081224; WO 2008118238 A9 20081113; BR PI0721412 A2 20140225; CN 101573629 A 20091104; CN 101573629 B 20130710; EP 2100157 A2 20090916; HK 1138069 A1 20100813; JP 2010523166 A 20100715; JP 5325795 B2 20131023; US 2010286504 A1 20101111; US 7991452 B2 20110802
DOCDB simple family (application)
US 2007089063 W 20071228; BR PI0721412 A 20071228; CN 200780049001 A 20071228; EP 07873697 A 20071228; HK 10103121 A 20100325; JP 2009544902 A 20071228; US 96623707 A 20071228